Martin: Martin is the leader of CORTIS and has a passionate, creative, and responsible personality. He takes his role as a leader seriously and often tries to keep the group motivated and in a good mood. He’s also very involved in producing music and seems to have a strong drive to improve himself. The members describe him as someone who communicates easily with others and puts a lot of passion into whatever he does.

James: James is the oldest member and has a confident, creative, and somewhat unpredictable personality. He’s heavily involved in choreography and has a strong sense of his own ideas and style. The members describe him as thoughtful and sometimes funny or weird in a way that makes everyone laugh. He also seems to be the type who can bring energy into the room and isn’t afraid to come up with unusual ideas.

Juhoon: Juhoon has a very calm, chill, and laid-back personality. He tends to take things at his own pace and is described by the other members as someone who stays relaxed even when things get hectic. At the same time, he’s thoughtful and good at understanding situations, and the members see him as someone who can help keep everyone balanced. He also has a creative side and contributes to CORTIS's music.

Keonho: Keonho is the youngest member and has a youthful, curious, and caring personality. He can be playful and has a natural sense of energy, but the members also describe him as considerate of other people's feelings and perspectives. He’s ambitious too—Martin describes him as someone who works extremely hard when he has a goal he wants to achieve. He also contributes ideas to CORTIS's videos and creative work.

Seonghyeon: Seonghyeon is a creative and strong-minded member who seems to have a very clear vision of what he wants. Although he can come across as quieter or softer at first, he has a surprisingly strong personality and lots of ideas. He’s deeply involved in songwriting and has created a huge number of demos, showing how seriously he takes his creativity. The members also describe him as someone who thinks outside the box and encourages everyone to try new things.